# Arkenstone Defense funding: rounds and investors

> Arkenstone Defense has raised $35M across 1 round since 2026. Investors include J2 Ventures, Susa Ventures and Artis Ventures (AV). Every round with its source.

Source: https://millionrounds.com/company/arkenstone-defense (Millionrounds; every figure on the page links to its filing or article)

United States · [Seed startup](https://millionrounds.com/companies)

# Who invested in *Arkenstone Defense*

One round we have observed, with the 4 investors named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Defence Tech Govtech Regtech

Raised 4 months ago

Follow Arkenstone Defense and see its new rounds in your feed. [Start following](https://millionrounds.com/login?join=1&why=follow&next=%2Fcompany%2Farkenstone-defense)

Funding summary Updated 5 Nov 2026

**$35M** raised across 1 round since 2026, from 1 source

- **Latest round:** Seed, $35M Jul 2026
- **Led by:** J2 Ventures
- **Investors:** 4 (1 led)

See who backed them

## The rounds

- **Jul 2026** Seed **$35M** [J2 Ventures](https://millionrounds.com/fund/j2-ventures) Lead [Susa Ventures](https://millionrounds.com/fund/susa-ventures) [Artis Ventures (AV)](https://millionrounds.com/fund/artis-ventures-av) [Granite Hill Capital Partners](https://millionrounds.com/fund/granite-hill-capital-partners) Reported by Ventureburn

## Funding filed with regulators

Arkenstone Defense filed 2 raises, $8.6M in all. Filings say how much was sold and to how many investors; they never name the investors.

- Jul 2025 **$600K** 2 investors of $4.0M offered SEC Form D
- Apr 2025 **$8.0M** 5 investors SEC Form D

## Everyone who backed them

[J2 Ventures](https://millionrounds.com/fund/j2-ventures) VC firm **1** round, led 1

[Susa Ventures](https://millionrounds.com/fund/susa-ventures) VC firm **1** round

[Artis Ventures (AV)](https://millionrounds.com/fund/artis-ventures-av) VC firm **1** round

[Granite Hill Capital Partners](https://millionrounds.com/fund/granite-hill-capital-partners) VC firm **1** round

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=arkenstone-defense).

## Also claim to have backed them

This firm lists Arkenstone Defense as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.

[Tau Ventures](https://millionrounds.com/fund/tau-ventures) VC firm Per its own site

## Quick answers about Arkenstone Defense

### Who invested in Arkenstone Defense?

Arkenstone Defense's investors include J2 Ventures, Susa Ventures, Artis Ventures (AV) and Granite Hill Capital Partners. J2 Ventures led its latest round.

### How much has Arkenstone Defense raised?

Arkenstone Defense has raised $35M across 1 round since 2026.

### When did Arkenstone Defense last raise?

Arkenstone Defense's most recent round was a Seed of $35M in Jul 2026, led by J2 Ventures.

### What was Arkenstone Defense's biggest round?

Its most recent round, $35M in Jul 2026, is also its largest on record.

### Who backed Arkenstone Defense first?

Arkenstone Defense's first round on record, in Jul 2026, was backed by J2 Ventures, Susa Ventures and Artis Ventures (AV) and 1 others.

### What stage is Arkenstone Defense at?

Arkenstone Defense's latest named round is a Seed, in Jul 2026.

### Where is Arkenstone Defense based?

Arkenstone Defense is based in the United States.

### Who led Arkenstone Defense's rounds?

J2 Ventures led the Seed in 2026.

## Companies like Arkenstone Defense

In the same sector, and raised in the last eighteen months.

[**Northwood Space** $505M · Nov 2026](https://millionrounds.com/company/northwood-space)[**Predicate** $16M · Oct 2026](https://millionrounds.com/company/predicate)[**Iris Technology** Oct 2026](https://millionrounds.com/company/iris-technology)[**Firehawk Aerospace** $150M · Oct 2026](https://millionrounds.com/company/firehawk-aerospace)[**Apex** $1.1B · Oct 2026](https://millionrounds.com/company/apex)[**Longeye** $25M · Oct 2026](https://millionrounds.com/company/longeye)

## Find investors like these

Search every investor by what they have actually funded, then narrow to your stage and market. Free.

Open the investor searchOr these rounds in the app